This is from Wikipedia. If I'm reading it right, it looks like all three brothers have the same parents.....
http://en.wikipedia.org/wiki/David_Cook_(singer)
Early life
Cook was born in Houston, Texas and raised in Blue Springs, Missouri. His parents are Beth (née Frye) and Stan Cook.[1] Cook's younger brother, Andrew, is an elementary education major at the University of Central Missouri,[2] and his older brother, Adam, lives in Terre Haute, Indiana with his wife and children.[3] Cook's parents divorced during his childhood; his mother remarried and now goes by Beth Foraker, and his father relocated to Indianapolis, Indiana.[1]
Cook's interest in music began early in life; he received his first guitar at the age of 2. He began singing in second grade, when his elementary school music teacher gave him a solo in a school choir performance. He proceeded to perform in virtually every Christmas and PTA program.[4] He also participated in choir and drama programs in middle school and high school. At Blue Springs South High School, he performed in musicals, including The Music Man, West Side Story, and Singin' in the Rain.[5][6][4] He had also been an avid baseball player during high school. After losing interest in sports, he focused more on music. He earned a theater scholarship to the University of Central Missouri, but he abandoned theater after two semesters, graduating from the school in 2006 with a degree in graphic design.[7][8] While in college, he was a member of Phi Sigma Kappa.[9] After his college graduation, he relocated to Tulsa, Oklahoma to pursue his career in music, telling his family, "I just want to give myself until I'm 26 years old to get a job."[10]
